[casper] Setting up 10gbe core for ROACH2

[Gary, Dale E.]

Hi All,

We previously were successful in setting up the 10gbe core for ROACH1 using
tap_start, which I believe resulted in a process tgtap appearing in the
ROACH.

I am using the same method for ROACH2 (using the latest ROACH2 rev 2 file
system loaded via netboot), and there is no reported error, but the ARP
table does not contain the MAC address for the destination IP address, and
when I check the processes running on the ROACH2 I do not see tgtap.

Has the procedure changed at all, or is there something I am doing wrong?

Thanks,
Dale

Here are the relevant katcp python calls we are using:

# Configuration Parameters for 10 GbE ports.
dest_ip = 10 * ( 2 ** 24 ) + 101 # DPP_IP 10.0.0.101
fabric_port = 60000
source_ip = 10 * ( 2 ** 24) + 11 # ROACH1, SLOT 0, CHANNEL 0: 10.0.0.11
mac_base = (2 << 40) + (2 << 32)

    # Configuring 10 Gbe core Tx_P
    print 'Configuring transmitter core...',
    sys.stdout.flush()
    fpga.tap_start('tapP1',tx_core_name, mac_base + source_ip, source_ip,
fabric_port)
    print 'done'

    print 'Setting-up DPP IP and port information...',
    sys.stdout.flush()
    fpga.wordwrite('f_ctrl_dpp_ip', 0, hex(dest_ip))
    fpga.wordwrite('f_ctrl_dpp_port', 0, hex(fabric_port))
    print 'done'

    # Reset 10 GbE cores
    print 'Resetting 10 GbE core...',
    sys.stdout.flush()
    fpga.wordwrite('f_ctrl_rst', 0, hex(1))
    fpga.wordwrite('f_ctrl_rst', 0, hex(0))
    print 'done'

    time.sleep(2)

    # Print ARP table
    print '\n===============================\n'
    print '10GbE Transmitter core details:'
    print '\n===============================\n'
    print "Note that for some IP address values, only the lower 8 bits are
valid!"
    fpga.print_10gbe_core_details( tx_core_name, arp=True )

This ARP table is correct for the source_ip, but all FF for the MAC address
of the dest_ip.